Which of the following muscles is a common intra-muscular injection site? A. deltoid B. gluteus maximus C. vastus medialis D. latissimus dorsi
Option A. Deltoid muscles is a common intra-muscular injection site.: The top arm on the shoulder is the area of the deltoid. It is the gluteus medius (as opposed to the gluteus maximus) this is used for IM injec- tions to keep away from the sciatic nerve.